AP EAMCET · PHYSICS · Wave Optics
In Young's double slit experiment, red light of wavelength \(6000 Å\) is used and the \(n\)th bright fringe is obtained at a point \(P\) on the screen. Keeping the same setting, the source of light is replaced by green light of wavelength \(5000 Å\) and now \((n+1)\) th bright fringe is obtained at the point \(P\) on the screen. The value of \(n\) is
- A \(4\)
- B \(5\)
- C \(6\)
- D \(3\)
Answer & Solution
Correct Answer
(B) \(5\)
Step-by-step Solution
Detailed explanation
Fringe width, \(\beta_G=n \frac{\lambda D}{d}\) And for \(n\) number of fringes, \(\beta_G=n \frac{\lambda D}{d} \text { or, } \beta_R=n \frac{\lambda D}{d}\) For \((n+1)\) th number of fringes,…
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